Main Street Capital Corporation announced the appointment of a new independent member to its Board of Directors. The new independent director is John E. Jackson, the Chief Executive Officer of Spartan Energy Partners, LP. Spartan provides comprehensive solutions for the treating and conditioning of produced natural gas.

Prior to founding Spartan, Mr. Jackson was the Chairman and Chief Executive Officer of Price Gregory Services Inc., a leading energy infrastructure services provider. Prior to Price Gregory, Mr. Jackson served as President and Chief Executive Officer of Hanover Compressor Company, now known as Exterran Holdings Inc. Prior to that, Mr. Jackson held several positions at Duke Energy Field Services, including Chief Financial Officer, and Union Pacific Resources. Simultaneous with Mr. Jackson's appointment to the Board, Todd A. Reppert retired from his Executive Vice Chairman and Board member roles at Main Street.

Mr. Reppert's retirement is in conjunction with a new investment initiative led by him which will focus on making debt and equity investments in private U.S. companies that are generally smaller than those currently being pursued by Main Street for investment. Mr. Reppert will remain involved in managing Main Street's wholly owned Small Business Investment Company funds while certain regulatory approvals are sought.